CN205608457U - CAN bus communication circuit with make and to control - Google Patents
CAN bus communication circuit with make and to control Download PDFInfo
- Publication number
- CN205608457U CN205608457U CN201620358906.5U CN201620358906U CN205608457U CN 205608457 U CN205608457 U CN 205608457U CN 201620358906 U CN201620358906 U CN 201620358906U CN 205608457 U CN205608457 U CN 205608457U
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- common mode
- data transceiver
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Abstract
The utility model discloses a CAN bus communication circuit with make and to control, including the singlechip, CAN bus, CAN bus data transceiver chip U2, common mode inductance U1, ESD protective diode D1, D2 and resistance R1, R2, R3, R4, electric capacity C1, C2, C3, C4, single chip microcomputer control CAN bus data transceiver chip's messenger's ability and forbidden energy, control signal is inputed on CAN bus data transceiver chip U2's 8 feet to the singlechip. When CAN bus data transceiver chip U2's 8 feet are the low level, be in the ability state that makes, when CAN bus data transceiver chip U2's 8 feet are the high level, be in the forbidden energy state. And the mutual of information can be accomplished through CAN bus data transceiver chip to the CAN network. Various state information in the CAN bus are carried out analysis processes through CAN bus data transceiver chip to the singlechip, on simultaneously the CAN bus number also can be given through CAN bus data transceiver chip to the singlechip outgoing letter.
Description
Technical field
This utility model relates to new-energy automobile CAN communication technique field, is provided in particular in
A kind of have enable the CAN telecommunication circuit controlled.
Background technology
Along with the development of automotive electronic technology, automotive control system electronic installation gets more and more, with
Time automobile various status informations need to pass to controller, cause attachment structure complex,
Cable is more, and therefore CAN network communication has become the communication party of main flow between electronic unit
Formula.CAN not only delivers data interaction information but also saves manufacturing cost.CAN is total
Carrying bulk information on line, once transmission information is wrong, and automotive control system will be made to be in
In state unstable, unsafe, cause great potential safety hazard.Therefore when similar event occurs
During barrier state, entire car controller master chip can forbidden energy CAN data transmit-receive core timely
Sheet, thoroughly disconnects entire car controller and outside writing to each other, and ensures that error message does not interferes with
Entire car controller, greatly eliminates unsafe factor.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of CAN having and enabling control
Bus communication circuitry, CAN telecommunication circuit delivers the status information of each control unit,
When the information of transmission is wrong, entire car controller master chip forbidden energy CAN data transmit-receive chip,
Thoroughly disconnect entire car controller and outside writing to each other.
For solving above-mentioned technical problem, technical solution adopted in the utility model is:
A kind of have enable the CAN telecommunication circuit controlled, including single-chip microcomputer, CAN,
CAN data transmit-receive chip U2, common mode inductance U1, ESD protection diode D1, D2 and
Resistance R1, R2, R3, R4, electric capacity C1, C2, C3, C4；CAN data transmit-receive core
The 1 of sheet U2,4,8 feet are connected with single-chip microcomputer；The 7 of CAN data transmit-receive chip U2
Foot connects 1 foot and 4 feet of common mode inductance U1 of diode D1；2 feet of diode D1 connect
Ground；6 feet of CAN data transmit-receive chip U2 connect 1 foot and the common mode of diode D2
3 feet of inductance U1；The 2 foot ground connection diode D2's of CAN data transmit-receive chip U2
2 foot ground connection；Resistance R1 is connected in parallel on 1 and 4 feet of common mode inductance U1；Resistance R2 is in parallel
On 2 and 3 feet of common mode inductance U1；1 foot of the one termination common mode inductance U1 of electric capacity C1,
Other end ground connection；2 feet of the one termination common mode inductance U1 of electric capacity C2, other end ground connection；
1 and 2 feet of common mode inductance U1 are connected in CAN；The one termination VCC of resistance R3
(5V), 5 feet of another termination CAN data transmit-receive chip U2；One end of resistance R4
Connect 5 feet of CAN data transmit-receive chip U2, other end ground connection；Electric capacity C3 and resistance
R4 is in parallel；The one termination 5V of electric capacity C4, other end ground connection.
Use and have the beneficial effects that produced by technique scheme:
This utility model uses Single-chip Controlling CAN data transmit-receive chip, once transmits letter
Ceasing wrong, CAN data transmit-receive chip forbidden energy can be possible to prevent to transmit by single-chip microcomputer
Rub-out signal, adds stability and the safety of automobile.
This utility model compact, is advantageously integrated installation on circuit boards, and uses CAN
Bus data transceiving chip carries out CAN communication, has saved body harness volume and has become with material
This, make automobile holistic cost reduce and more lightweight.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Detailed description of the invention
With detailed description of the invention this utility model made further details of theory below in conjunction with the accompanying drawings
Bright.
As it is shown in figure 1, this utility model is a kind of CAN communication electricity having and enabling control
Road, including single-chip microcomputer, CAN, CAN data transmit-receive chip U2, common mode inductance
U1, ESD protection diode D1, D2 and resistance R1, R2, R3, R4, electric capacity C1, C2,
C3、C4；1,4,8 feet of CAN data transmit-receive chip U2 are connected with single-chip microcomputer；CAN
7 feet of bus data transceiving chip U2 connect 1 foot of diode D1 and common mode inductance U1's
4 feet；The 2 foot ground connection of diode D1；6 feet of CAN data transmit-receive chip U2 connect
1 foot of diode D2 and 3 feet of common mode inductance U1；CAN data transmit-receive chip U2
The 2 foot ground connection of 2 foot ground connection diode D2；Resistance R1 is connected in parallel on the 1 of common mode inductance U1
With on 4 feet；Resistance R2 is connected in parallel on 2 and 3 feet of common mode inductance U1；The one of electric capacity C1
1 foot of termination common mode inductance U1, other end ground connection；The one termination common mode inductance of electric capacity C2
2 feet of U1, other end ground connection；1 and 2 feet of common mode inductance U1 are connected to CAN
On；One termination VCC (5V) of resistance R3, another terminates CAN data transmit-receive chip
5 feet of U2；5 feet of the one termination CAN data transmit-receive chip U2 of resistance R4, separately
One end ground connection；Electric capacity C3 is in parallel with resistance R4；The one termination 5V of electric capacity C4, the other end
Ground connection.
Use principle of the present utility model:
In this utility model, the enable of Single-chip Controlling CAN data transmit-receive chip and taboo
Can, control signal is input to 8 feet of CAN data transmit-receive chip U2 by single-chip microcomputer.When
When 8 feet of CAN data transmit-receive chip U2 are low level, it is in enabled state；Work as CAN
When 8 feet of bus data transceiving chip U2 are high level, it is in disabled state.And CAN
Network can complete the mutual of information by CAN data transmit-receive chip.In CAN
Various status informations are given to single-chip microcomputer by CAN data transmit-receive chip and are analyzed processing；
It is total that the signal that single-chip microcomputer sends simultaneously can also be given to CAN by CAN data transmit-receive chip
On line, the information wherein transmitted have passed through filtering, filtering common mode interference, antistatic, Anti-surging
Process.
Claims (3)
1. have and enable the CAN telecommunication circuit controlled, it is characterized by, including single-chip microcomputer, CAN, CAN data transmit-receive chip U2, common mode inductance U1, ESD protection diode D1, D2 and resistance R1, R2, R3, R4, electric capacity C1, C2, C3, C4；1,4,8 feet of CAN data transmit-receive chip U2 are connected with single-chip microcomputer；7 feet of CAN data transmit-receive chip U2 connect 1 foot and 4 feet of common mode inductance U1 of diode D1；The 2 foot ground connection of diode D1；6 feet of CAN data transmit-receive chip U2 connect 1 foot and 3 feet of common mode inductance U1 of diode D2；The 2 foot ground connection of the 2 foot ground connection diode D2 of CAN data transmit-receive chip U2；Resistance R1 is connected in parallel on 1 and 4 feet of common mode inductance U1；Resistance R2 is connected in parallel on 2 and 3 feet of common mode inductance U1；1 foot of the one termination common mode inductance U1 of electric capacity C1, other end ground connection；2 feet of the one termination common mode inductance U1 of electric capacity C2, other end ground connection；1 and 2 feet of common mode inductance U1 are connected in CAN；One termination VCC (5V) of resistance R3,5 feet of another termination CAN data transmit-receive chip U2；5 feet of the one termination CAN data transmit-receive chip U2 of resistance R4, other end ground connection；Electric capacity C3 is in parallel with resistance R4；The one termination 5V of electric capacity C4, other end ground connection.
A kind of CAN telecommunication circuit with enable control the most according to claim 1, is characterized by, complete the mutual of information by CAN data transmit-receive chip.
A kind of CAN telecommunication circuit with enable control the most according to claim 1, is characterized by, single-chip microcomputer can be with forbidden energy CAN data transmit-receive chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358906.5U CN205608457U (en) | 2016-04-26 | 2016-04-26 | CAN bus communication circuit with make and to control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358906.5U CN205608457U (en) | 2016-04-26 | 2016-04-26 | CAN bus communication circuit with make and to control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205608457U true CN205608457U (en) | 2016-09-28 |
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ID=56970886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620358906.5U Active CN205608457U (en) | 2016-04-26 | 2016-04-26 | CAN bus communication circuit with make and to control |
Country Status (1)
| Country | Link |
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| CN (1) | CN205608457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315364A (en) * | 2016-04-26 | 2017-11-03 | 河北优控新能源科技有限公司 | It is a kind of that there is the CAN telecommunication circuit for enabling control |
-
2016
- 2016-04-26 CN CN201620358906.5U patent/CN205608457U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315364A (en) * | 2016-04-26 | 2017-11-03 | 河北优控新能源科技有限公司 | It is a kind of that there is the CAN telecommunication circuit for enabling control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190428 Address after: Room 603-1, Block E3, Saida Emerging Industrial Park, Xiqing Economic and Technological Development Zone, Tianjin Binhai New Area Patentee after: Tianjin Youcon Zhihang Technology Co., Ltd. Address before: 050072 Hebei New Energy Technology Co., Ltd. 0311-85388087, No. 16 Dubei Street, Shiqing Road, Xinhua District, Shijiazhuang City, Hebei Province Patentee before: Hebei ECO-EV Science and Technology Co., Ltd. |